/*******************************************************************************
 * Copyright 2016, 2017 vanilladb.org contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package org.vanilladb.core.storage.file.io;

import java.io.File;
import java.io.IOException;

import org.vanilladb.core.storage.file.io.javanio.JavaNioByteBuffer;
import org.vanilladb.core.storage.file.io.javanio.JavaNioFileChannel;
import org.vanilladb.core.storage.file.io.jaydio.JaydioDirectByteBuffer;
import org.vanilladb.core.storage.file.io.jaydio.JaydioDirectIoChannel;
import org.vanilladb.core.util.CoreProperties;

public class IoAllocator {

	private static boolean USE_O_DIRECT;

	static {
		USE_O_DIRECT = CoreProperties.getLoader().getPropertyAsBoolean(
				IoAllocator.class.getName() + ".USE_O_DIRECT", false);
	}

	public static IoBuffer newIoBuffer(int capacity) {
		if (USE_O_DIRECT)
			return new JaydioDirectByteBuffer(capacity);
		else
			return new JavaNioByteBuffer(capacity);
	}

	public static IoChannel newIoChannel(File file) throws IOException {
		if (USE_O_DIRECT)
			return new JaydioDirectIoChannel(file);
		else
			return new JavaNioFileChannel(file);
	}
}
